--- title: Best Baeldung posts — June 2026 | daily.dev description: The most upvoted Baeldung posts from June 2026, curated by the daily.dev community. canonical: https://daily.dev/sources/baeldung/best-of/2026/06 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/baeldung/best-of/2026/06 og:type: website og:site_name: daily.dev og:title: Best Baeldung posts — June 2026 | daily.dev og:description: The most upvoted Baeldung posts from June 2026, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of Baeldung — June 2026 1. 1 [](https://daily.dev/posts/new-features-in-java-26-x8pp9vbj4 "New Features in Java 26") Article Baeldung·10w New Features in Java 26 Java 26 introduces a range of improvements spanning performance, security, and language features. Key highlights include: restrictions on reflective modification of final fields to strengthen encapsulation; removal of the long-deprecated Applet API; AOT object caching now available with any garbage collector including ZGC; HTTP/3 support in the HTTP Client API via QUIC; G1 GC throughput improvements reducing thread synchronization overhead; a second preview of PEM encoding APIs for cryptographic objects; sixth preview of Structured Concurrency; second preview of Lazy Constants for faster startup; eleventh incubator of the Vector API for SIMD-based computation; and a fourth preview extending pattern matching to primitive types in instanceof and switch. 76 9 2. 2 [](https://daily.dev/posts/bean-background-initialization-in-spring-framework-sasqaxae8 "Bean Background Initialization in Spring Framework") Article Baeldung·10w Bean Background Initialization in Spring Framework Spring Framework introduces a native background initialization mechanism via the \`@Bean(bootstrap = BACKGROUND)\` attribute, allowing selected singleton beans to initialize asynchronously during the ApplicationContext refresh phase. This decouples expensive initialization tasks — such as cache warming, connection pool setup, or data preloading — from the main startup thread, reducing overall startup latency. Spring coordinates dependency safety by suspending resolution for beans that depend on still-initializing background beans, and \`ObjectProvider\` can be used for deferred retrieval in early-access scenarios. The mechanism preserves standard Spring lifecycle semantics while enabling parallel execution during context refresh. 14 1 3. 3 [](https://daily.dev/posts/introduction-to-cross-platform-java-development-with-codename-one-equaxwt04 "Introduction to Cross-Platform Java Development With Codename One") Article Baeldung·13w Introduction to Cross-Platform Java Development With Codename One Codename One is an open-source platform that lets Java and Kotlin developers build cross-platform apps (iOS, Android, JavaScript, Windows, macOS) from a single Maven-based codebase. This tutorial walks through building a 'Daily Routine' app with Java 17, covering project setup via the Codename One Initializr, application lifecycle, form-based navigation, responsive UI with layout managers and CSS UIIDs, local JSON persistence, repository and service patterns, REST integration with the Geoapify API, JSON parsing, and embedded map previews using BrowserComponent with Leaflet. The tutorial emphasizes keeping forms focused on UI while delegating persistence, networking, and business logic to dedicated services and repositories. 11 [See all Baeldung archives](/sources/baeldung/best-of) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://daily.dev/sources/baeldung/best-of/2026/06#page","url":"https://daily.dev/sources/baeldung/best-of/2026/06","name":"Best Baeldung Posts — June 2026","description":"The most upvoted Baeldung posts from June 2026, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/baeldung/best-of/2026/06#items","numberOfItems":3,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/new-features-in-java-26-x8pp9vbj4","name":"New Features in Java 26"},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/bean-background-initialization-in-spring-framework-sasqaxae8","name":"Bean Background Initialization in Spring Framework"},{"@type":"ListItem","position":3,"url":"https://daily.dev/posts/introduction-to-cross-platform-java-development-with-codename-one-equaxwt04","name":"Introduction to Cross-Platform Java Development With Codename One"}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sources","item":"https://daily.dev/sources"},{"@type":"ListItem","position":3,"name":"Baeldung","item":"https://daily.dev/sources/baeldung"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/baeldung/best-of"},{"@type":"ListItem","position":5,"name":"June 2026"}]}]} ```